"""
1603. Design Parking System

Design a parking system for a parking lot.
The parking lot has three kinds of parking spaces: big, medium, and small, with a fixed number of slots for each size.

Implement the ParkingSystem class:

* ParkingSystem(int big, int medium, int small) Initializes object of the ParkingSystem class.
  The number of slots for each parking space are given as part of the constructor.
* bool addCar(int carType) Checks whether there is a parking space of carType for the car that wants to get into the parking lot.
  carType can be of three kinds: big, medium, or small, which are represented by 1, 2, and 3 respectively.
  A car can only park in a parking space of its carType.
  If there is no space available, return false, else park the car in that size space and return true.


Example 1:
    Input
        ["ParkingSystem", "addCar", "addCar", "addCar", "addCar"]
        [[1, 1, 0], [1], [2], [3], [1]]
    Output
        [null, true, true, false, false]

    Explanation
        ParkingSystem parkingSystem = new ParkingSystem(1, 1, 0);
        parkingSystem.addCar(1); // return true because there is 1 available slot for a big car
        parkingSystem.addCar(2); // return true because there is 1 available slot for a medium car
        parkingSystem.addCar(3); // return false because there is no available slot for a small car
        parkingSystem.addCar(1); // return false because there is no available slot for a big car. It is already occupied.

Constraints:
    0 <= big, medium, small <= 1000
    carType is 1, 2, or 3
    At most 1000 calls will be made to addCar

"""


class ParkingSystem(object):

    def __init__(self, big, medium, small):
        """
        :type big: int
        :type medium: int
        :type small: int
        """
        self.parkingLot = {
            1: big,
            2: medium,
            3: small
        }

    def addCar(self, carType):
        """
        :type carType: int
        :rtype: bool
        """

        if self.parkingLot[carType] == 0:
            return False

        self.parkingLot[carType] -= 1
        return True
